Ettel-feed-contkol mechanism



" 1,636,582 July i9 1927' L. A. wrrTER FUEL FEED CONTROL MECHANISM Filed Aug. 19. 1926 ATTORNEY.

Y www ma atented July 19, 1927.

PATENT OFI-'ica LEON A. WITTER, AOIE LAKEWOOD, OHIO FUEL-FEED-oonrnon MEGHANISM.

y Application filed August 19, 1926. Serial No. 130,187.

My invention relates to improved fuel control mechanism for internal combustion engines adapted to regulate the delivery of fuel thereto in such a manner that fuel is c delivered to the engine as needed and when need but is automatically cut off therefrom u on the stoppingof the engine or upon t e discontinuance of the supply of lubricant to the engine.

My improved control mechanism is inserted in the fuel feed line which leads to the engine. Tt is responsive to the pressure in the lubricating system with which the engine is provided whereby, during the time l the engine is running and the needed supply of lubricant is being furnished to the engine, fuel is supplied in the required amount. If the engine is stopped or if the lubricant supply falls below a predetermined amount, my improved device automatically operates to shut off the supply of fuel. It therefore serves to prevent the run` ning of the engine whendry and prevents the not uncommon occurrence of the burns ing out of bearings and injury to the mechanism caused by the running of the engine upon an insuicient supply of oil.

My improved device is simple in construction, inex ensive to manufacture, positive in its operation, and effectively serves to perform the purpose for which it is intended to be employed. Further advantages and meritorious features vof my invention `will more fully appear from the following description of the preferred embodiment illustrated in the accompanying drawing and defined in the, appended claims.

In the drawings: y

Fig. 1 is an elevation of an internal combustion engine equipped with my improvement.

Fig. 2 is a vertical sectional view through mpFinvention.

' ig. 3 is a fragmentary verticalsectional view taken on the same line as Fig.` 2 with the valve mechanism open.-

My 'nvention is here illustrated in association with an internal combustion engine 'of the character commonly used` in automobile construction. `A plurality of com.-

' furnished with fuel from a manifold indicated as 12," the cylinder block being indicated as 10. It is common practice to pro-A vide a carburetorlsuch asis indicated as 14 to which a fuel supply pipe 16 leads from a suitable source of fuel supply not shown in the drawing.

I prefer to build my invention in the form of a connection suitable to be readily insertcd in the fuel feed line at a convenient place. It is shown as comprising a fuel container having a lower barrel section 18 provided with a removable screw-threaded 'cap 2 0. The barrel has an inlet 22 which 1s suitably yconnected in the fuel feed line 16 that leads to the source of fuel supply and an outlet 24 that is suitably connected in the fuel feed line which leads to the carburetor.

'I he inlet 22 terminates in a standpipe 24, which has ay fuel outlet'26. The standpipe is mteriorly recessed as at.28. A valve 30 1s provided to regulate the iow offuel from the standpipe .to the barrel 18. This Valve has a lstem` 32 that extends upwardly through a passageway 34 in the stand ipe. A spring 36 is provided. One end 0 the spring engages the standpipe and the opposite end engages a nut 38 on the valve stem. This spring holds the valve to its seat thereby normally preventing the flow of. fuel into the barrel.`

The valve, while held normally closed by thel spring 36, is adapted to be opened by a diaphragm 40. This diaphragm is gripped between the cap 20 and the upper edge of the barrel 18. Suitable gaskets 42 may be provided. The normal position ofthe diaphragm is concave-'upwardly as shown in Fig. 2. A downwardly concave guard 44 is provided. This guardhas an opening 46 through which the valve stem 32 extends. The diaphragm carries an axial lug 48 which engages the tip of the valve stem and when the diaphragm is moved downwardly opens the valve.

A conduit 50 leads from the upper end of the casing above the diaphragm to the oil pump 52. This oil pump is driven b the engine and is a part of the provided ubrica-ting system which supplies lubricant to the engine under pressure created by the um i vU on o eration of the um lubribustion chambers are provided which are p p P p p p cant pressure is-created in the pipe 50. This forces the diaphragm 40 downwardly against the convex guard 44 upon which the diaphragm rests for support and opens the valve `30 against the resistance'of spring 36` and a valve within the standpipe held yieldingly upwardly to close the fuel passageway therethrough, said valve having a stem extending above the standpipe, a diaphragm positioned within the container above the standpipe open on one side to lubricant pressure and provided with a part engaging the stem of said valve to depress the same to open the valve. i

2. ln an internal combustion engine having a fuel feed line and a lubricant pressure line, a container within the fuel feed line, said container having an inlet and an outlet whereby a limited supply of fuel is normally maintained within the container, said inlet including a standpipe projecting upwardly from the floor of the container and provided with an outlet spaced above the floor'of the container, a valve within the standpipe to regulate the flow of fuel through said container, said valve extending above the standpipe and provided with a spring seated on top of the standpipe to hold the valve upwardly and closed, and a diaphragm within the container open on one Side to the lubricant pressure and provided with a part adapted to engage the valve .to depress the same to the open position controlling said valve.

3. In an internal combustion engine having a fuel feed line and a lubricant pressure ,Y

to the lubricant pressure line and means Within the fuel compartment associated with the diaphragm to regulate the flow of `fuel therethrough.

4. ln an internal combustion engine, a

fuel feed line, a lubricant pressure line, a

fuel container within the feed line having an inlet and an outlet for fuel arranged so that a determined quantity of fuel is normally maintained within said container, a

valve to control the flow of fuel through f1 said container, a diaphragm responsive to lubricant pressure connected with said valve to open the same when subjected to a determined lubricant pressure and means operable upon the release of said pressure to close said valve.

ln testimony whereof, I sign thisspecification.

v LEGN A. WlTlER. 

